Just been to watch my masochistic friend do her first ever triathlon (Quote - "It was awful, much worse than I thought. Can't wait for my next one!").

Heard a lot about triathletes going over to cycling, a couple to swimming, but none to track (or, more likely, road running/marathon).

Anyone know any examples?

Must admit I'm in awe of anyone whom even contemplates it, especially the Ironman distances.